R44-2018
17
RS-232
I
NTERFACE
Handshaking
Review your system documentation to identify handshaking requirements, and use
these labels to change the settings if required. The following brief descriptions explain
each selection.
Hardware Control
CTS/RTS Flow Control
— is hardware handshaking. The scanner
activates the RTS (Ready to Send) line when it is ready to send data to the
host. The scanner waits for an active Clear to Send (CTS) signal from the
host before transmitting data. If hardware control is disabled, CTS/RTS
communication will not take place. If the host deactivates the CTS line
during data transmission, the host will receive additional characters for no
more than 2msec
1
.
Label Transmission
Label Transmission
Xmission
CTS
Data
CTS/RTS Flow Control
Active
Disabled
Inactive
CTS Scan Control
— is also a hardware control. When scan control is
enabled, label transmission is disabled until CTS is asserted and de-asserted.
Label 1
Label 2
Label 1
CTS
Data
CTS Scan Control
Assert
Will not scan again
until toggle
De-assert
Disabled until
1
Varies slightly depending upon baud rate selected.
Содержание QuickScan 1000
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